JP4048508B2 - Receptor plug and equipment for public - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
TECHNICAL FIELD The present invention relates to a drain plug for constructing a public sewer system and a public plug and a device using the receptacle plug used until the sewer system in a private facility is connected. is there.
[0002]
[Prior art]
The public sewerage system pre-lays the main drainage under public roads, and at the same time connects with private sewerage facilities (drainage branches) such as private houses and buildings in the future. In order to be able to be received by the drainage main, a public maser having an inlet for connecting to the drainage branch pipe is installed at a required portion of the drainage main.
At the time of installation, the inflow receptacle for public masers installed in the drainage main pipe is closed by fitting a receptacle plug in the opening of the inflow receptacle.
[0003]
As shown in FIG. 5, for example, the receptacle plug used for the public maser is composed of the inflow receptacles 42 and 43 formed in the public basin body 41 attached to the drain main 40 laid under the public road. It attaches to the inflow receiving port 42 of them .
This receptacle plug 44 is formed of a solid cylindrical body as short as about 30 to 50 mm as a whole, and has one end as a closing portion 45 and a ring-shaped packing 47 on the outer periphery. The other end portion is formed with a flange portion 46 that comes into contact with the peripheral edge of the tip opening portion of the inflow receiving port 42.
[0004]
The receiving plug 44 is inserted into the inflow receiving port 42 and closes the inflow receiving port 42 with a packing 47 in a watertight manner. When the inlet plug 44 is removed, the receiving plug 44 is formed in the flange 46 of the receiving plug 44. A slotted screwdriver is inserted into the driver groove 48, and the receptacle plug 44 is extracted from the inflow receptacle 42 by lever application.
[0005]
[Problems to be solved by the invention]
The receptacle plug for public use with such a structure that opens with a flat-blade screwdriver is a very simple tool and can be used by anyone. Removing the receptacle plug from the mouth has the advantage that anyone can do it freely.
However, the construction to connect the drainage system in a private facility to the public sewer system can be done only by a construction shop designated by the local government. It is stipulated that construction should not be performed.
[0006]
However, recently, the drainage of private facilities can be drained into the main drain without permission, without the need for special tools to remove the receptacle plug from the public inlet. Unauthorized acts of connecting branch pipes occur frequently, which has become a major bottleneck in sewerage administration.
[0007]
In view of the present situation, the present invention prevents unauthorized actions by allowing only a person who owns a plug wrench of a specific shape to open the receptacle plug provided in the drain main. In addition, the present invention is intended to provide a receptacle plug and a device for public use which are very easy to open the receptacle plug.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 of the present invention provides:
The plug main body made of a hollow body, which can be inserted into the inflow port to be applied, is closed on one end surface of the plug body to make a water stop surface,
As an engaged part that engages with the engaging part of the opening wrench,
The other end surface is also closed, and a slit having a required width and length is provided at the center, or the other end surface is opened, and a plurality of protrusions are arranged on the same circumference of the inner peripheral wall near the opening. It is a receptacle plug for public use characterized by what has been done .
[0009]
The invention according to claim 3
A receptacle plug for public mascot as described above;
It comprises an opening wrench having an engaging portion that engages with an engaged portion of the receiving plug.
This is a receptacle plug device for public use.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The receptacle plug device for public masers according to the present invention is the above-mentioned drainage in a public basin attached to a drainage main for connecting a drainage main laid under a public road and a sewerage system of a private facility. Consists of a receiving plug for temporarily closing the inflow opening that is opened to connect to the branch pipe, and a wrench for opening the opening plug from the inflow receiving opening. Yes.
[0011]
The public masu mounted on the drainage mains, the shape of masu itself with the original inlet socket number that need not exceptional limitations such as size, socket plugs of the inlet receiving port There are no particular restrictions on the number of inlets, etc. that are sealed off, and in general, the piping of sewerage facilities is made of hard synthetic resin. Can be formed.
[0012]
The receiving plug for closing the inflow receiving port for public use is composed of a short plug main body having an outer diameter equal to the inner diameter of the pipe of the inflow receiving port, and can close the inflow receiving port. If so, it may be a solid body having a hollow portion in part, but from the viewpoint of ease of forming an engaged portion for opening that will be described later, a hollow body is preferable.
[0013]
The receiving plug made of the hollow plug main body is such that at least one end face (tip side) inserted into the inflow receiving port is closed, and the receiving plug is pulled out (opened) from the inflow receiving port. For this purpose, an engaged portion is formed.
For example, when the other end face (base end side) is opened, the engaged portion is configured so that the engaged portion formed of a plurality of protrusions is formed on the inner circumferential wall in the vicinity of the opening. If the other end face is closed, a slit having a required width and length may be formed at the center of the other end face to form the engaged part. .
[0014]
Further, in order to maintain a close fitting state with the inflow receiving port, the receiving plug is formed with a concave groove in a predetermined portion of the outer peripheral surface of the base end side of the plug main body, and an O-ring is engaged with the concave groove. It is desirable to seal the inflow receiving port in a watertight manner by insertion.
In addition, as a means for holding the inlet and the outlet plug in a watertight manner, an O-ring provided with a tongue piece for retaining along the inner peripheral edge is mounted in the inlet and the inner peripheral surface of the O-ring. This can also be achieved by bringing the outer peripheral surface of the receptacle plug into close contact with each other.
[0015]
An opening wrench for opening the receiving plug from the inflow receiving port is provided with an operating handle at one end of a metal shaft, perpendicular to the shaft, and at the other end. An engaging portion that engages with an engaged portion formed on the receiving plug, for example, an engaged portion made of a plurality of protrusions is arranged on the same circumference on the inner peripheral wall near the opening. If you, or to form an engagement portion in which the projection member engages is made of notch available, or, the one end face of the hollow body with a stop surface of the water, it closes the other end face, as a When an engaged portion made of a slit having a required width and length is formed in the central portion, an engaging portion having a shape closely fitting with the slit is formed.
[0016]
This unplugging for a wrench is, basically, Ru der what constitutes the public masu for socket plug device without the one of the socket plug and pairs.
Actually, if there is one opening wrench having an engaging part that can be engaged with the engaged part formed on the receiving plug, it should be applied to a plurality of receiving plugs. Therefore, if the receiving plug and the opening wrench form a pair only at the time of use, it corresponds to the receiving plug device for public use according to the present invention.
[0017]
[Action]
The receptacle plug and apparatus for public masers of the present invention are engaged with an engaged portion formed in the receptacle plug, with the receptacle plug blocking the inflow receptacle of the public mascot laid under the public road. an engaging portion that can, Ru is engaged with the engagement portion of the cap removal wrench.
Then, the engaging portion is inserted into the innermost portion of the receiving plug, the cap removal wrench is rotated in either direction, the engaged portion of the receiving plug engaging portion of the cap removal wrench It is configured so that the receiving plug is detached from the inflow receiving port by pulling in the front direction while maintaining the engaged state, and a dedicated opening wrench is used. Only the person who has it can connect a drain pipe as needed, and an unauthorized connection construction can be prevented.
[0018]
【Example】
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, embodiments of a receptacle plug device for public use according to the present invention will be specifically described with reference to the accompanying drawings.
The receptacle plug device 1 for public use according to the present invention comprises a receptacle plug 2 and an opening wrench 8.
As described in the section of the prior art, the receiving plug 2 is an inflow formed in a public basin 41 attached to a part of a drain main pipe 40 (see FIG. 5) laid under a public road. The inlet 42 is inserted and sealed.
[0019]
The receiving plug 2 has a plug main body 3 made of a synthetic resin hollow body having a diameter of about 165 mm, which is closed with a predetermined curved surface to form a water blocking surface 4 and the other end surface 5 is closed. while the open state without the forms a ring-shaped groove on the outer peripheral surface in the vicinity of the other end face 5, the O-ring 6 is attached to the recessed groove, and, on the other end face 5 of the socket plug 2 On the near inner peripheral surface, the engaged portions 7, 7... Consisting of four convex portions are uniformly formed on the same circumference, and the total length is about 179 mm.
[0020]
One opening wrench 8 is integrally provided at a base end portion of a shaft rod 9 having a required length with a central portion of a rod-like handle 10 being orthogonal to each other, and at the distal end portion of the receiving plug 2. Four that match the four engaged parts 7, 7... Formed on the inner peripheral surface of the receiving plug 2 at the periphery of the disk that can be inserted into the hollow plug main body 3 and substantially coincide with the inner diameter. Are provided as the engaging portion 11.
[0021]
In the receptacle plug device 1 for public masers having such a structure, when the receptacle plug 2 is inserted into the inflow receptacle 42 while being pressed by appropriate means, the O-ring 6 is connected to the inner surface of the inflow receptacle 42 and the receptacle plug. 2 is closed, and at the same time, the water blocking surface 4 seals the inflow receiving port 42 and is mounted in a watertight manner.
[0022]
Then, when the connecting cents private facilities laid drainage branch pipe (not shown) may dig where the inflow socket 42 is embedded, Ru was out the inlet socket 42 microscope.
After that, the engaging portion 11 made of a disk of the opening wrench 8 is inserted from the other end surface 5 of the opening of the receptacle plug 2, and the recesses 12, 12... Formed in the engaging portion 11. Are engaged with the engaged portions 7, 7... Formed in the receiving plug 2, inserted further in the back direction, held in the handle 10, and rotated in any one direction, toward the other end surface 5 side. When pulled back, the surface of the engaging portion 11 other than the concave portion 12 overlaps with the engaged portions 7, 7... And the opening wrench 8 is engaged in the receiving plug 2 without coming out. .
[0023]
Thus, with the handle 10 of the cap removal wrench 8 which is engaged in the socket plug 2 by pulling it toward the socket plug 2 leaves the inlet socket 42, Ru can be easily pulled out.
Thus, the inflow receiving port 42 can be opened so that the connection work can be performed, but the receiving plug 2 cannot be removed from the inflow receiving port 42 without using the opening wrench 8. Unauthorized opening can be prevented beforehand by storing the opening wrench 8 in a predetermined department so that only persons concerned can use the opening wrench 8.
[0024]
FIG. 4 shows another embodiment of the receptacle plug device for public maser according to the present invention. The basin plug device 20 for public mascot is composed of a receptacle plug 21 and a wrench 27 for opening. Yes.
The receiving plug 21 is formed by closing a front end of a plug main body 22 made of a hollow body with a predetermined curved surface to form a water blocking surface 23, and a rear end thereof is also closed by a lid body 24. A slit having a required width and length is formed in the lateral direction to form the engaged portion 25, and a ring-shaped concave groove is formed on the outer peripheral surface of the plug main body 22 in the vicinity of the lid body 24. An O-ring 26 is mounted in the concave groove.
[0025]
On the other hand, in the same manner as the embodiment shown in FIG. 3, the opening wrench 27 is provided integrally with the central portion of the rod-shaped handle 30 orthogonal to the base end portion of the shaft rod 29 having a required length, Ru der which the engaged portion engageable with bars formed in the lid 24 of the the tip socket plug 21 and the engaging portion 28 is provided integrally.
In use, after engaging the engaging portion 28 with the engaging portion 28 of the receiving plug 21 attached to the inflow receiving port, the engaging portion 28 is pushed into the plug main body 22, and the engaging portion 28 is engaged by rotating. The receiving port plug 21 is pulled out from the inflow receiving port by moving it from the joint portion 25 and pulling the handle 30 forward while maintaining the state.
[0026]
【The invention's effect】
The receptacle plug device for public use according to the present invention comprises a receptacle plug having an engaged portion having a special shape, and a plug opening wrench having an engaging portion engageable with the engaged portion. Therefore, only those who have a wrench for opening can open the inflow port provided in the drainage main pipe laid under the public road, and can prevent unauthorized actions in advance. is there.
[0027]
Particularly, the receptacle plug device for public use according to the present invention is very simple in that an engaged portion is formed in the receptacle plug, and an engaging portion that can be engaged with the engaged portion is provided in the opening wrench. because it uses the Do configuration, Ru can be provided at low cost can be mass-produced.
In addition, unplugging for a wrench, necessarily prevents fraud without requiring the same number and socket plug, when disengaging the socket plug from the inlet socket, distributing the force of unplugging for a wrench in the entire socket plug Since it can be pulled out, it can be opened with very little effort and has a great practical advantage.
[Brief description of the drawings]
FIG. 1 is a partially cutaway perspective view showing an example of a public receptacle plug device of the present invention.
2 is a cross-sectional view of a main part showing a use state of the public maser receptacle plug device of FIG. 1. FIG.
3 is a cross-sectional view taken along line AA in FIG.
FIG. 4 is a perspective view showing another example of the receptacle plug device for public use according to the present invention.
FIG. 5 is an explanatory view showing a conventional public receptacle plug.
[Explanation of symbols]
1,20 receptacle plug device for public use 2,21 receptacle plug 3,22 plug main body 4,23 water stop surface 5, other end surface 7,25 engaged portion 8,27 opening wrench 11,28 engaging portion 42 Inflow port

Claims (4)

The plug main body made of a hollow body, which can be inserted into the inflow port to be applied, is closed at one end surface to make a water stop surface,
As an engaged part that engages with the engaging part of the opening wrench,
The other end surface is also closed, and a slit having a required width and length is provided at the center thereof, or the other end surface is opened, and a plurality of protrusions are arranged on the same circumference of the inner peripheral wall in the vicinity of the opening. public masu for socket plug characterized by <br/> was it. The plug main body is
The receptacle plug for public mascots according to claim 1, wherein an O-ring is attached to an outer peripheral portion in the vicinity of the end surface opposite to the water stop surface. A receptacle plug for a public mascot according to claim 1 or 2,
A receptacle plug device for public maser comprising an opening wrench having an engaging portion that engages with an engaged portion of the receptacle plug. The opening wrench is
A handle for operation is provided at one end of the shaft so as to be orthogonal to the shaft.
4. The receptacle plug device for public use according to claim 3 , wherein an engagement portion that engages with an engaged portion formed on the receptacle plug is provided at the other end portion .

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